圆东西图选

 圆东西图选

大部分蔬果圆形，因为圆形物体每一处向外接触面小, 在受到外部冲击时,最不容易被损害，所以圆形水果能够忍受风吹雨打和小磕碰。 另外圆形物体面积小，水果长成圆形，它们的面积小，果皮水分蒸发散失得少，就有利于果实的生长。

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